Single-effect two-stage coupling absorption cooling device

The invention relates to the technical field of cooling, and discloses a single-effect two-stage coupling absorption cooling device. A first high pressure generator is driven by medium-temperature power exhaust heat. A cooling agent steam outlet of the first high pressure generator is connected with a working fluid inlet of an injector. A cooling agent steam outlet of a second high pressure generator is connected with a driving fluid inlet of the injector. The outlet of the injector is connected with the inlet of a condenser. The outlets of absorbers are connected with the inlets of solution pumps. The outlet of each solution pump is divided into two paths, wherein one path is connected with the inlet of a first solution heat exchanger, and the other path is connected with the inlet of a second solution heat exchanger. Through the arrangement of the injector, the pressure of the second high pressure generator is reduced, the heat resource temperature of the second high pressure generator is reduced remarkably, and different grades of heat sources, such as medium-temperature waste heat, low-temperature solar heat and terrestrial heat, can be used well synchronously.